<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <!-- <transition-group name="breadcrumb"> -->
    <el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
      <span v-if="item.redirect==='noredirect'||index==levelList.length-1" class="no-redirect">{{ item.meta.title }}
        <!-- <span> <el-button style="margin:15px" type="primary" size="mini" @click="goBefore()">返回</el-button></span>  -->
      </span>
      <span v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</span>
    </el-breadcrumb-item>
    <!-- </transition-group> -->
  </el-breadcrumb>
</template>

<script>
// import pathToRegexp from 'path-to-regexp'

export default {
  data() {
    return {
      levelList: null
    }
  },
  watch: {
    $route() {
      this.getBreadcrumb()
    }
  },
  created() {
    this.getBreadcrumb()
  },
  methods: {
    getBreadcrumb() {
      const matched = this.$route.matched.filter(item => item.name)

      // const first = matched[0]
      // if (first && first.name !== 'first') {
      //   matched = [{ path: '/', meta: { title: 'Home' }}].concat(matched)
      // }

      this.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
    },
    // pathCompile(path) {
    //   // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
    //   const { params } = this.$route
    //   var toPath = pathToRegexp.compile(path)
    //   return toPath(params)
    // },
    handleLink(item) {
      // eslint-disable-next-line no-unused-vars
      const { redirect, path } = item
      if (redirect) {
        this.$router.push(redirect)
        return
      }

      // this.$router.push(this.pathCompile(path))
      // this.$router.push("/")
    },

    goBefore() {
      history.go(-1)
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
.el-breadcrumb {
    display: inline-block;
    font-size: 14px;
    line-height: 50px;
    .no-redirect {
      color: black;
      cursor: text;
    }

  }
  .el-breadcrumb__inner a{
    font-size: 14px;
    color: #868686;;
    font-weight: 400;
  }
</style>
